NM_001368067.1:c.770C>T

Variant names:

• chr10-86699292-C-T
• rs375798002
• NM_001368067.1:c.770C>T

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4 BP6 BS1

The NM_001368067.1(LDB3):​c.770C>T​(p.Thr257Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000415 in 1,613,282 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T257T) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000042 (0 hom.)
• Consequence: LDB3 NM_001368067.1 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 7.20
• Publications: 0 publications found

Genes affected

LDB3 (HGNC:15710): (LIM domain binding 3) This gene encodes a PDZ domain-containing protein. PDZ motifs are modular protein-protein interaction domains consisting of 80-120 amino acid residues. PDZ domain-containing proteins interact with each other in cytoskeletal assembly or with other proteins involved in targeting and clustering of membrane proteins. The protein encoded by this gene interacts with alpha-actinin-2 through its N-terminal PDZ domain and with protein kinase C via its C-terminal LIM domains. The LIM domain is a cysteine-rich motif defined by 50-60 amino acids containing two zinc-binding modules. This protein also interacts with all three members of the myozenin family. Mutations in this gene have been associated with myofibrillar myopathy and dilated cardiomyopathy. Alternatively spliced transcript variants encoding different isoforms have been identified; all isoforms have N-terminal PDZ domains while only longer isoforms (1, 2 and 5) have C-terminal LIM domains. [provided by RefSeq, Jan 2010]

LDB3 Gene-Disease associations (from GenCC):

• myofibrillar myopathy 4

  Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• dilated cardiomyopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• familial dilated cardiomyopathy

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
• arrhythmogenic right ventricular cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ENSG00000289258 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.32571417).
• BP6: Variant 10-86699292-C-T is Benign according to our data. Variant chr10-86699292-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 406809.
• BS1: Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.0000424 (62/1461616) while in subpopulation MID AF = 0.00052 (3/5768). AF 95% confidence interval is 0.000141. There are 0 homozygotes in GnomAdExome4. There are 32 alleles in the male GnomAdExome4 subpopulation. Median coverage is 35. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001368067.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDB3	NM_001368067.1	MANE Plus Clinical	c.770C>T	p.Thr257Met	missense	Exon 9 of 9	NP_001354996.1
	LDB3	NM_007078.3	MANE Select	c.896+6721C>T		intron	N/A	NP_009009.1
	LDB3	NM_001171611.2		c.1115C>T	p.Thr372Met	missense	Exon 9 of 9	NP_001165082.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LDB3	ENST00000263066.11	TSL:1 MANE Plus Clinical	c.770C>T	p.Thr257Met	missense	Exon 9 of 9	ENSP00000263066.7
	ENSG00000289258	ENST00000443292.2	TSL:1	c.2420C>T	p.Thr807Met	missense	Exon 18 of 18	ENSP00000393132.2
	LDB3	ENST00000372056.8	TSL:1	c.1115C>T	p.Thr372Met	missense	Exon 8 of 8	ENSP00000361126.4

Frequencies

GnomAD3 genomes AF: 0.0000330 AC: 5 AN: 151666 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000736

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000282 AC: 7 AN: 248556 AF XY: 0.0000445

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000445

Gnomad OTH exome AF: 0.000165

GnomAD4 exome AF: 0.0000424 AC: 62 AN: 1461616 Hom.: 0 Cov.: 35 AF XY: 0.0000440 AC XY: 32 AN XY: 727084

African (AFR) AF: 0.000119 AC: 4 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53276

Middle Eastern (MID) AF: 0.000520 AC: 3 AN: 5768

European-Non Finnish (NFE) AF: 0.0000468 AC: 52 AN: 1111910

Other (OTH) AF: 0.0000331 AC: 2 AN: 60378

GnomAD4 genome AF: 0.0000330 AC: 5 AN: 151666 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 73994

African (AFR) AF: 0.00 AC: 0 AN: 41234

American (AMR) AF: 0.00 AC: 0 AN: 15242

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5152

South Asian (SAS) AF: 0.00 AC: 0 AN: 4808

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10506

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000736 AC: 5 AN: 67944

Other (OTH) AF: 0.00 AC: 0 AN: 2082

Alfa AF: 0.0000868 Hom.: 0

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000121 AC: 1

ExAC AF: 0.0000414 AC: 5

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions as Germline

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	-	Myofibrillar myopathy 4 (1)
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.35
CADD	Uncertain	25
DANN	Pathogenic	1.0
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.94	D
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.33	T
MetaSVM	Benign	-0.66	T
PhyloP100		7.2
PROVEAN	Benign	-1.5	N
REVEL	Benign	0.16
Sift	Benign	0.031	D
Sift4G	Uncertain	0.033	D
Polyphen		1.0	D
Vest4		0.30
MVP		0.65
ClinPred		0.23	T
GERP RS		5.1
Mutation Taster		=59/41	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs375798002; hg19: chr10-88459049;